Performance Indices - Reichler and Kim 2008 - CDO version
OLD VERSION: minor errors in the code
chis 1993 1993

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 20.5166 	land 	CRU	25.13	0.81
msl 	  1.9764 	global 	COADS	11.69	0.16
qnet 	 20.4257 	ocean 	OAFLUX	14.24	1.43
tp 	 37.1514 	global 	CMAP	38.87	0.95
ewss 	  7.3190 	ocean 	DASILVA	4.03	1.81
nsss 	  5.7252 	ocean 	DASILVA	3.10	1.84
SST 	 33.0171 	ocean 	GISS	17.21	1.91
SSS 	  0.1468 	ocean 	levitus	0.22	0.66
SICE 	2107.2814 	ocean 	GISS	0.34	6197.88
T 	 21.5415 	zonal 	ERA40	38.89	0.55
U 	  3.6073 	zonal 	ERA40	12.07	0.29
V 	  2.4015 	zonal 	ERA40	8.25	0.29
Q 	 25.9009 	zonal 	ERA40	29.41	0.88

Total Performance Index is : 477.6507
Partial PI (atm only) is   : 0.5614

Performance Indices - Reichler and Kim 2008 - CDO version
NEW VERSION: windstress, land-sea masks and 100hpa corrections
chis 1993 1993

Field 		PI 	Domain	Dataset	CMIP3	RatioCMIP3
t2m 	 18.8025 	land 	CRU	25.13	0.74
msl 	  1.9764 	global 	COADS	11.69	0.16
qnet 	 19.2534 	ocean 	OAFLUX	14.24	1.35
tp 	 37.1514 	global 	CMAP	38.87	0.95
ewss 	  7.2022 	ocean 	DASILVA	4.03	1.78
nsss 	  5.3258 	ocean 	DASILVA	3.10	1.71
SST 	 33.0171 	ocean 	GISS	17.21	1.91
SSS 	  0.1468 	ocean 	levitus	0.22	0.66
SICE 	2107.2814 	ocean 	GISS	0.34	6197.88
T 	 20.6174 	zonal 	ERA40	38.89	0.53
U 	  3.4418 	zonal 	ERA40	12.07	0.28
V 	  2.2852 	zonal 	ERA40	8.25	0.27
Q 	 20.6505 	zonal 	ERA40	29.41	0.70

Total Performance Index is : 477.6092
Partial PI (atm only) is   : 0.5185